158845791 has 16 divisors (see below), whose sum is σ = 228846464. Its totient is φ = 97425504.

The previous prime is 158845787. The next prime is 158845793. The reversal of 158845791 is 197548851.

It is a happy number.

It is not a de Polignac number, because 158845791 - 2² = 158845787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158845791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158845793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5340 + ... + 18606.

It is an arithmetic number, because the mean of its divisors is an integer number (14302904).

Almost surely, 2^158845791 is an apocalyptic number.

158845791 is a deficient number, since it is larger than the sum of its proper divisors (70000673).

158845791 is a wasteful number, since it uses less digits than its factorization.

158845791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13590.

The product of its digits is 403200, while the sum is 48.

The square root of 158845791 is about 12603.4039449666. The cubic root of 158845791 is about 541.5749528140.

The spelling of 158845791 in words is "one hundred fifty-eight million, eight hundred forty-five thousand, seven hundred ninety-one".